% Update to Debian Nginx guide
% Leah Rowe
% 8 January 2023

Two days ago, I published this guide:

[Nginx web server on Debian with LetsEncrypt HTTPS and
Certbot](../docs/http/debian-nginx.md)

If you *followed* the guide before now, about 5PM UK time on 8 January 2023,
or the follow-up guide for it that was briefly online:

Re-read the guide again.

The initial version of the guide had you stop nginx before making certificates
in certbot, or renewing them.

A follow-up guide, briefly online, showed you how to disable only plain HTTP
but not HTTPS sites, to make certbot work; this meant HTTP-to-HTTPS redirects
were disabled during certificate renewal.

The newly improved version of the main guide tells you how to renew
certificates *without* disabling anything. Plain HTTP to HTTPS redirects stay
in place, and HTTPS sites stay online. Everything stays online. When renewal
is done, the nginx config quietly reloads, to get the new certificates.

In other words, the new revision of the guide gives you *100% uptime*, assuming
no other faults of any kind (such as network downtime, or a tantalum capacitor
shorts and there's no fuse, and everything burns - a million things could
happen, and do happen, every day, somewhere in the world).

Have fun!
